The Skeeter Screen Patio Egg is an easy, safe and effective way to deter mosquitoes from gardens, decks and patios for 24 hours a day, 7 days a week for many months. This DEET-free formula is derived from natural essential oils. It is safe for pets and the entire family and has a pleasant floral scent people like and biting insects hate. Every Patio Egg comes with complete instructions for use. The Patio Egg comes to you unscented and you pour the mosquito deterrent into it. The fragrance naturally migrates up the inside of the Egg and the pleasant floral scent will hatch within 24 hours and scent your entire area. Sitting on its glazed base or hanging in its nest of netting (included), the Egg radiates fragrance in all directions and natural air currents carry the fragrance over the entire patio area (200-300 sq. ft.).